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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P157A or P16D7-P16D9 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different variant/trim than selected.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Control - Component @ KR121B Reductant Control Module Relay 2 - - P157A -
Control - Relay Coil @ KR121A Reductant Control Module Relay 1 P16D8 P16D7 P16D9 -
Control - Relay Coil @ KR121B Reductant Control Module Relay 2 P16D8 P16D7 P16D9 -
Ground - Relay Coil @ KR121A Reductant Control Module Relay 1 - P16D7 - -
Ground - Relay Coil @ KR121B Reductant Control Module Relay 2 - P16D7 - -